JP4152253B2 - Soundproof body mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a soundproof body mounting structure for installing a soundproof body in the vicinity of the upper portion thereof for the purpose of enhancing the noise reduction effect of the soundproof wall.
[0002]
[Prior art]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-180119 [Patent Document 2]
JP-A-9-1111723 [Patent Document 3]
JP 2001-32219 A [Patent Document 4]
Japanese Patent Laid-Open No. 2002-161516
Most of the sound barriers standing on the side of roads, railway tracks, etc. have a structure in which sound insulation panels are built in H-shaped columns arranged at regular intervals. These existing sound barriers exhibit noise reduction effects according to their design specifications, but in order to cope with the increase in noise level due to increased traffic volume compared to the time of installation, the sound barriers There are cases where it is desired to increase the noise reduction effect.
[0004]
Therefore, as shown in Patent Documents 1 to 4 described above, a noise reduction effect is improved by about several dB by attaching a silencer or other soundproof body to the upper end of an existing soundproof wall. However, depending on the location, there is a restriction that the height of the soundproof wall cannot be made higher than that of existing ones from the viewpoint of sunshine and landscape. In such a case, it will be necessary to remove the topmost sound insulation panel of the existing sound insulation wall before attaching the sound insulation body, which will increase the cost of replacement work, and it will take time to dispose of the removed sound insulation panel. There was a problem.
[0005]
[Problems to be solved by the invention]
The present invention solves the above-described conventional problems, and it is possible to attach a soundproof body to the upper end of an existing soundproof wall without significantly changing the height of the soundproof wall and without removing the existing soundproof panel. It was made to provide a body mounting structure.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that an outer wall made of a sound insulating member is formed on an outer side of an upper portion of an H-shaped column of an existing soundproof wall in which a sound-insulating panel is built in the H-shaped column, A soundproof body mounting structure for mounting a soundproof body constituted by a partition wall made of a sound insulating member provided inside and a top plate made of a sound absorbing member, which is fixed to the upper top end of the H-shaped column. The soundproof body is fixed by a first mounting bracket and a second mounting bracket that is fixed in a state where the flange portion of the H-shaped support is sandwiched and has a protruding portion for fixing the soundproof body that protrudes to the back of the H-shaped support. It is characterized by being attached to and fixed to an H-shaped support at two upper and lower positions .
[0007]
According to the soundproof body mounting structure of the present invention, since the soundproof body can be attached to the existing soundproof wall without removing the soundproof panel, it is possible to reduce the installation man-hours and costs, and the sound insulation panel is not removed, so that it is disposed of. Does not cause any problems. In addition, it is possible to attach a soundproof body to the outside of the upper portion of the H-shaped support of the soundproof wall without greatly changing the height of the soundproof wall, thereby enhancing the noise reduction effect.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention are shown below.
FIG. 1 is a cross-sectional view of the entire soundproof wall adopting the soundproof body mounting structure according to claim 1, wherein 1 is an H-shaped column arranged at a constant interval, 2 is dropped between adjacent H-shaped columns 1, 1. It is an existing sound insulation panel built in. The sound insulation panel 2 is a sound insulation material alone or a sound insulation material incorporated with a sound absorbing material, and a concave portion 3 is formed on the back surface (surface on the private house side). Reference numeral 4 denotes a soundproof body having substantially the same length as that of the sound insulation panel 2, and is attached to the upper outer side of the H-shaped support column 1 of the existing soundproof wall by means described later.
[0009]
FIG. 2 is a cross-sectional view of the soundproof body 4 of the embodiment. The soundproof body 4 includes an outer shell 5 made of a steel plate or other sound insulating member, a partition wall 6 made of a sound insulating member provided in the inside, and an upper surface plate 7 made of a sound absorbing member. The sound absorbing material 7 is arranged on the entire surface or in a slit shape. By attaching such a soundproof body 4 to the upper outer side of the existing soundproof wall, the diffraction distance of the sound wave exceeding the upper end of the soundproof wall is lengthened, and the sound absorption effect by the sound absorbing material 7 and the resonance effect in the space by the partition wall 6 etc. By attenuating the energy of sound waves, a noise reduction effect of several dB can be obtained.
[0010]
However, the shape and structure of the soundproof body 4 are not limited to this, and various forms as shown in FIG. 3A is the structure in which the partition wall 6 is omitted from the structure in FIG. 2, and B is the structure in which the top plate 7 made of a sound absorbing member is omitted. C is composed entirely of a sound-absorbing member except the base. D, E, and F indicate changes in shape. Thus, the soundproof body 4 in the present invention can be composed of one or both of a sound absorbing member (chain line) and a sound insulating member (solid line).
[0011]
The soundproof body mounting structure will be described below with reference to FIGS.
As shown in FIG. 4, in the invention of claim 1, the soundproof body 4 is attached to the H-shaped support column 1 at two locations, upper and lower. As shown in FIG. 5, the upper end of the existing soundproof wall is provided with a top end plate 8 that is in close contact with the top end of the H-shaped support column 1, and a headboard 9 that covers the top end of the top end plate 8. A wire stopper 11 provided at the end of the prevention wire 10 is fitted in the long hole of the top end plate 8.
[0012]
In this embodiment, the existing headboard 9 and the top end plate 8 are removed, and a first mounting bracket 12 having an L-shaped cross section is newly fixed to the upper end surface of the H-shaped support column 1 with a bolt 13. As shown in FIG. 6, the first mounting bracket 12 has a mounting hole 13a for the soundproof body 4 on a vertical surface, and a wire mounting hole having a large-diameter central portion and a narrow long hole on a horizontal plane. 14 is provided. Then, as shown in FIG. 4, the front upper end portion of the soundproof body 4 is fixed to the first mounting bracket 12 with bolts 15.
[0013]
In addition, since it is necessary to insert a bolt and a tool in the inside of the soundproof body 4 in order to perform this attachment, when the upper surface of the soundproof body 4 is sealed with the sound-absorbing member, work as shown in FIG. It is preferable to form the opening 16 and close it after the work is completed.
[0014]
As described above, the upper end of the front surface of the soundproof body 4 is fixed to the upper end of the H-shaped support column 1 by the first mounting bracket 12, but this is still unstable, so that the second as shown in FIG. The front central portion of the soundproof body 4 is fixed to the flange portion 18 of the H-shaped support column 1 by the mounting bracket 17. As shown in FIG. 8, the second mounting bracket 17 of this embodiment is composed of two members that sandwich the flange portion 18 of the H-shaped support column 1, and the soundproof body 4 is attached to the protruding portion 19 on the back surface of the H-shaped support column 1. The front center portion is fixed by the bolt 20. As a result, the soundproof body 4 is stably fixed to the H-shaped support 1 at two locations, the upper portion and the central portion. If such a second mounting bracket 17 is used, the soundproof body 4 can be mounted without drilling the H-shaped support column 1.
[0015]
The wire stopper 11 provided at the end of the fall prevention wire 10 of the sound insulation panel 2 is passed through the large diameter portion of the wire mounting hole 14 of the first mounting bracket 12 as shown in FIGS. It is shifted in the horizontal direction and fixed to the narrow slot. Further, as shown in FIG. 9, the soundproof body dropping prevention wire 22 is passed through the eyebolt 21 of the soundproof body 4, and further passed through the wire mounting hole 14 of the first mounting bracket 12 to similarly attach the wire stopper 23 at the end. Keep it fixed. Thereby, the sound insulation panel 2 and the soundproof body 4 can be prevented from dropping at the time of a vehicle collision. Finally, a new headboard 24 is attached as shown in FIG.
[0016]
In this embodiment, since the H-shaped support column 1 does not need to be drilled, there is no risk of corrosion and the construction period can be shortened. Furthermore, since the soundproof body 4 can be attached by work from the road side, the construction period can be shortened and the cost can be reduced.
[0017]
[0018]
[0019]
[0020]
[0021]
【The invention's effect】
As described above, according to the present invention, since the soundproof body can be attached to the upper end of the existing soundproof wall from the road side without removing the soundproof panel from the existing soundproof wall, the installation man-hour and cost are reduced. be able to. Moreover, since it is not necessary to remove the sound insulation panel, the disposal problem does not occur. Moreover, since the soundproofing body is attached to the outside of the upper portion of the H-shaped column of the existing soundproofing wall, the noise reduction effect of the soundproofing wall can be enhanced without significantly changing the height of the soundproofing wall.
[Brief description of the drawings]
FIG. 1 is a sectional view of an entire soundproof wall adopting the soundproof body mounting structure according to claim 1;
FIG. 2 is a cross-sectional view of the soundproof body according to the first embodiment.
FIG. 3 is a schematic cross-sectional view showing a modified example of the soundproof body.
FIG. 4 is an enlarged view of a main part of the first embodiment.
FIG. 5 is a cross-sectional view showing an upper portion of an existing soundproof wall.
FIG. 6 is a perspective view of a first mounting bracket.
FIG. 7 is a perspective view showing a modified example of the soundproof body.
FIGS. 8A and 8B are a plan view and a perspective view showing a second mounting bracket. FIGS.
FIG. 9 is a plan view of the top end plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 H-shaped support | pillar, 2 Sound insulation panel, 3 Recessed part, 4 Soundproof body, 5 Outer shell, 6 Bulkhead, 7 Top plate, 8 Ceiling plate, 9 Coping, 10 Fall prevention wire, 11 Wire stopper, 12 1st mounting bracket , 13 bolt, 13a mounting hole, 14 wire mounting hole, 15 bolt, 16 work opening, 17 second mounting bracket, 18 flange portion, 19 projecting portion, 20 bolt, 21 eyebolt, 22 soundproof body fall prevention wire, 23 Wire stopper, 24 Coping, 30 First mounting bracket, 31 bolt, 32 Second mounting bracket, 33 bolt, 34 Second mounting bracket, 40 Reverse U-shaped mounting bracket, 41 bolt, 42 For work Notch, 43 Fixed spring

Claims (1)

  From the upper outer side of the H-shaped support of the existing soundproof wall in which a sound-insulating panel is built in the H-shaped support, an outer wall made of a sound-insulating member, a partition wall made of a sound-insulating member provided inside, and a sound-absorbing member A soundproof body mounting structure for mounting a soundproof body composed of a top plate, and a state where the first mounting bracket fixed to the upper top end of the H-shaped column and the flange portion of the H-shaped column are sandwiched The soundproof body is attached and fixed to the H-shaped support column at two locations, upper and lower, by a second mounting bracket having a protrusion for fixing the soundproof body projecting to the back of the H-shaped support column. Soundproof body mounting structure.

Images